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使用JSON.parse转换字符串对象的困惑

JSON.parse('{"id":1259744819760442395}')输出结果为{id:1259744819760442400},求教下大佬转换之后怎么id的值和原来的不一样了,最后三位一个395一个400


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因为JS中能精准表示的最大整数是Math.pow(2, 53) 你这个json里id值是个数字 太大了精度会出问题 搞成字符串就不会了


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